Steam-condensing apparatus.



G. HL GLBSONL P. A. BANCEL.

STEAM CONDENSING APPARATUS. APPLICATION FILED Nov. 29. 1912.

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m 0....0 o o o o o? 9...@ o o @Evo o o r IN VE N TCR3 WITNESSES y y ATroRNEY .6. H. AGIBSON & P. A. BANCEL. STEAM cQNnENslNG APPARATUS. APPLICATION HLED NOV.29| I9l2.

1,143,382. Patented June 15, 1915.

` y .'NVENToRs wrrNgssEs /J m34/w 557V, ieg/MQW i I A TTORNE Y UNITED STATES PATENT OFFICE.

GEORGE H. GIBSON, OF MONTCLAIR, NEW JERSEY, AND PAUL A. RANGEL, F NEW i YORK, N. Y.

STEAMCONDENSING APPARATUS.

Specification of Letters latent.

Patented June 15, 1 915,.

Application filed November 29, 1912. Serial No. 733,941.

T0 all Whom it may concern Be it known that we, GEORGE H. GIBSON, of Montclair, in the county of Essex and State oi' New Jersey, and PAUL A., BANCEL, of the city and county of New York, in the State of New York, both citizens of the United States, have invented a certain new and useful Improvement inl Steam- Condensing Apparatus, Aof which the following is a true and exact description, reference being had to the accompanying drawings,

which form a part thereof.

Our present inrention'relates to apparatus, such as is employed for condensing the exhaust steam from steam turbines, engines or the like, and particularly to condensing apparatus oi the type in which there is employed a main condenser with separate outlets ior water of condensationand air, and in conjunction therewith an auxiliary condensing and vacuum producing apparatus for withdrawing air iii-oni the main condenser and for condensing the steam admixed therewith. By the term air as used in this connection, we mean to include not only atmospheric air but all other gases and vapors not readily condensible and tending to accumulate in the condensing space of the .main condenser or other chamber to be exhausted. "L k -v The object. of the'present invention is to provide improved means for withdrawing the air from a main condenser or other vacuum chamber, and in particular to pro- Y vide for the maintenance of a high vacuum in the main cozulcnscr or other vacuum chamber with a vacuum pump of less capacity and less expensive to manufacture than has heretofore been required. In accomplishing this result we utilize the steam supplied to an auxiliary turbine, employed to drive the air orV water -circulating pump or like power consuming device pertaining to tbe plant of which the apparatus forms a part. l/Ve utilize this steam by irst expanding it to or other vacuum chamber and employing the jet action of the expanded steam to sue the air and steam admixed therewith in larger or smaller amount, out of the mainCondenser or other vacuum chamber, and, to carry the resulting mixture through a reeompressi'on nozzle in which the mixture is compressed to a pressure somewhatsabove `vacuumproducing apparatus. The result the ow pressure which it isdesired to maintain in the main condenser A the Vacuum maintained in'the main condenser or other vacuum chamber, prlor to its delivery to the auxiliary condenser and ing' decrease in vacuum which'it is necessary to maintain in the auxiliary apparatus decreases the required capacit and increases the eiiciency of the latter. portion of the kinetic energy of the steam developed vby its expansion is imparted to the turbine through' which the steam or the mixture of air and steam is passed prior to its delivery .0f the'drawings: Figure 1 is a diagram- I matic representation, partly in sectional plan, of one form of .ipparatus'embodying our invention.` Fig. 2 is a partial sectional plan of a portion of a modified-form'of apparatus. Fig. 3 is a sectional plan of a portion ot another modified form of apparatos; and Fig. 4 is a section on the line 4.-4 of Fig. 3.

In the drawings, and referrin first to the construction shown in Fig. 1, represents an auxiliary turbine of the condensing plant, which, as shown', is employed to drive a mixed air and water pump J. The

wheel chamber A in which the turbine wheel B works, receives motive .iiuid from an ejector C, which comprises compression nozzles D, expanding nozzles E', and a mixing chamber C into which the expanding nozzles E open and from which the compressionv nozzles D' lead directly to the Wheel chamber A. A steam supply pipe F lead- 100 ing from a suitable source supplies steam to the nozzles E', and the mixing chamber C .is connected yby the piping Gto the air outlet, or preferably as shown to 'the distributedl air outlets H of the main condenser H. 1705 The outlet chamber A2 of the turbine is connected by the pipe Ito the auxiliary condenser I and the common air and'water outlet from the latter is connected by the -pipe I2 to the inlet of the wet vacuum pump J, 111i 25 ,y be ,-alloj'v'vableand this is an advantage.l The decreased Volume and increased temperature condenser reduces the size vand increases: the i 3o.

which d'schargesinto aie ha weu K.. The nozzles E 'are arranged to expand the steam supplied bythe pipe F to the 10W pressure which it is desired to maintain at the air,

pressure of the steam and air mixture, to rotate the turbine Wheel, and toA carry the mixture through the piping and into the auX- iliary condensing and vacuum producing The increased 'pressure mam-l .'apparatus. p tamedin the aux1l1ary condensing and vacuum producing apparatus results in 'a dccreased volume of air and steam to be han ,dled', thus permitting the usel of a smaller 4"pair pump. The increased temperaturev of y the'mixture permitsr the cooling Water toV be discharged from the auxiliaryl condenser at a higher temperature than would 'otherwise of'the mixture passed into tbe-auxiliary eliciency'of `the auxiliaryv condenser. The steam supplied by the pipe F maybe a't low pressure; for instance, it may be bled from "an intermediate stage of the' turbine ex-vl hausting into the'main condenser I-I. H2

is the Water outlet from the latter.

" .In the modified construction Ashown in Fig. 2, the steam-supply pipe F forl the tur- I bine Af. lis directly connected to 'the'steam chest A4 of the latter, se thatthe pressure:- 1n the steam chest is the same as in the pipe- F. -The steam chest A4 is connected tothe wheel chamber A1 by expanding nozzles A,

l passages yA, shaped to recompress the fluidand the pipe G leading from the air outlet orv outlets of the main condenser is'also connected to the turbine Wheel chamber A1,- 'which is of appreciably greater thickness than the turbine wheel BB working therein.

yIn this form yof lour apparatus the Wheel V'chamber A10 is connected to the exhaust-l chamber A2' of theturbine by nozzles or passingvv through these passages to the desired extent.v From the chamber A2 the air "and steam mixture maypass through the i e I1 to auxiliaicondensing and vacuum PP A e producing apparatus, asshowlr'in Fig. 1. In this form of our invention the rejected 'n velocity 'of' the air and steam mixture as it rejected velocity is `always substantial in the' case of a small'turbine of the type employed for auxiliaries'.

leaves' the turbinewheel is utilized in the.

desired' recdmpression of the mixture'.v This In Fig; 2 the turbine Wheel chamber A10 forms the mixing'chamber of a sort of an steam.

In the highly compact form in which ourv invention is embodied in Figs. 3'and 4, the

vthe auxiliary condensin ducing apparatus by s ortening the path of a maincondenser, auxiliary condensi ejector ,of which the passages A and A form the expansionv and compression nozzles.- The turbine wheel itself forms an effective device forl mixing Ythe `air and auxiliary condensing and vacuum producing apparatus comprlses a -rotary ]et condenser mounted m the same casing L as the turbine Wheel BC 'by which it is driven.'

Steam is supplied through the pipe F to the are shaped steam chamber L which.

opens to the wheel chamber L2 through expanding nozzles L3. The pipe Gfromfzthe air outlets of the main condenser, Vl(gnot shown) opens toa chamber L". The chamber L4 is directly open to the Wheel chamber beneath the steam chamber.l The mixture of ai r and' steam issues from the wheel chamber L2 through compression` nozzle -Lf which open at their discharge ends into the Wheel., chamber L7 of a rotary jet condenserl and air' pump. -The rotary impeller M of the latter connected t'o and driven by the shaft B of the turbine Wheel BC. Q representsthe lpg,

condensing and hurling Water supply.

and L the diffusion chamber surroun in the impeller. In addition to its .mechanica 9'5 simplicityand compactness, the apparatus4 shown inFigs. 3 and 4 has the advanta e of vreducing theloss due tothe frictiona resistance to the flow of the fluids through and vacuum protrareled by these fluids.

Certainl features of invention pertainingv to the utilization of the'knetic energy of a. portion of4 a body of steam to perform the mechanical work in the condensing apparatus requiredfor-the pro er condensation the-,steam and therein, of this portion Q also of another portion of said body of steam, Y disclosed vbut not claimed herein, "is -the sole .invention of one of us; name y, laul A. Bancel and is claimed in ap li ation Serial No. 2' et,050 filed by himpo e'vI ndate herewith. 1

While in accordance with the "proiiisi nsof the statutes we have illustrated'and. escribed' the best forms of lour inventio new known -to us, it will Vbe apparent -tothse skilled in the art thatchanges mayhem de in the form of theap aratus disclosed 'wi houtdeparting from .t e spiritof `our inv ntion, and that in some cases certain featu of our invention may be'employed with' u t i a corresponding use of other features. "i Haring now described our mventiln,

what we,.claim as new and desire tcf'see re by Letters Patent, is: y i

vl. In a condensing plant, the combinati n and if'acuum'producmg apparatus, au

iary '.t'urbflvne Wheel, @selecties supiera', s.

l l i. l

Steam for drivingr said Wheel, means for expanding Suid Steam to :i pressure not exceeding thut which it is desired to maire tain in .sn-iid condens-en and means for utilizing,r n portion ot' the, kinetic energy of the expunded stezuu to li-:iw uir out of said Condenser und mix it with the steam and to reeoiuprese Suid mixture und deliver it to seid uppurntus :it u preesure exceeding that muinmimul in :mid condenser.

Q. ln 'i1-condensing plant comprising n marin eouleuser. rod :i auxiliary condensin;r unil meuum producing apparatus, the eomhiursion of :i steum ejector atlupted to rsithrlruu uir from Suid malinV condenser and menus l'or eompressing the mixture of air :md stia-iu; i. uiu, r from the ejector, and delivering' il tu Quid uppurutus :it :1 pressure hir-:e thnt zooiufuined in the mein condenser. nl. l u turhiue wheel :1c-ted upon by .-:iul reeei ue energy from the mixture of :fii'uii1lw`euinl'u :i condensing pluut, the Combination ot' 1: renin eoiulen.-.er` hu'ving separate nir und unter outlets, nuxiliury condensing and wwuuu produeiug` uppurulus, un uuxiliary slr-ru: turhf'ue eozuprisinf; :i wheel ehumher rnd i wheel working therein` menne-for4 :Lzw'iuring #tenui of low pressure und :it high velocity to said cluimher. un outlet connection lezziling from Suid ehumher to Suhl uppurutiw Suid connection heling udupled to reiompress the Huid puseing through it, und :i connection between Huid wheel ehuuiher und lheair outlet or outlets of lQuid main eondenser.

1. ln u eoufleusiug plant, the combination ot' u muiu eoudeueer, having :separate nir und water outlets, u rotury jet condenser comprising an impeller chamber and a ro 4one or more expanding nozzles, a Connection between said wheel chamber and the air outlet or outlets of Said main condenser, 1nd un outlet connection' from said .wheel chene her to smid impeller clmmher, including one or more compression nozzles, whereby u pressure muy he umiutnined in Suid wheel ehumher corresponding to the veeiuun-desired in the main condenser, and the nir and steam passing through Seid wheel chamber is' delivered to Suid impeller :it i pressure zihove thntexisting in Suid main condenser. The combination with :i chui'nher to he exhuusted of ineens for withdrawing air therefrom con'iprising auxiliary condensing und vacuum producing apparatus,v an auxiliury turbine wheel, u connection supplyiu; r team for `driving said wheel, Ineens for expuniliug Suid steam to u preSsure not exveilingr thut which it is desired to maintuin in Huid ehnmher`r und menus for utilizing a portion of the kinetic energy of the expanded steam to druw nir out of said chamber und mi it with the Stezun und to recompress Suid mixture und deliver it to said uppuruius ut n pressure exceeding that Innintuined in Suid chamber.

GEORGE ll. GIBSON. i PAUL A. BANCEL. llfitnessesi: l

J. RALPH (luxeon, llowmo M. Rowe. 

